RECOM introduces RVP007 transformer driver for isolated power supplies

RECOM has expanded its power IC portfolio with the introduction of the RVP007, an integrated transformer driver engineered for isolated power supplies. Designed to accept an input voltage range of 4.5 to 24V, the device integrates four power MOSFETs into a full-bridge topology. This high level of integration allows engineers to develop highly compact power supply solutions capable of delivering between 1W and 20W of output power while minimizing the external component count. The new driver will be showcased at electronica 2026 in Munich.

Flexible switching and LLC support
Beyond standard full-bridge operation, the RVP007 supports LLC resonant applications, an operating mode that significantly reduces electromagnetic interference (EMI) while boosting overall power conversion efficiency. The device offers highly flexible frequency management; engineers can program the switching frequency via a dedicated CLK pin. Without an external resistor, the internal frequency defaults to a nominal 250 kHz, but it can be precisely tuned between 75 kHz and 750 kHz when a programming resistor is applied. To ensure operational stability, the IC incorporates a soft-start function and dead-time control to prevent the simultaneous conduction (shoot-through) of opposing switches.

Comprehensive protection for harsh environments
Housed in a miniature 5 x 6mm ESOP8 package, the RVP007 is equipped with an array of integrated safety features, including input overvoltage protection, current limiting, short-circuit protection, and overtemperature shutdown with automatic recovery. Rated for an operating temperature range of -40°C to +125°C, the driver is specifically targeted at demanding industrial environments. Typical use cases include providing isolated power for Silicon Carbide (SiC) and Insulated-Gate Bipolar Transistor (IGBT) gate drivers, distributed control systems (DCS), photovoltaic inverters, telecommunications, and precision medical equipment.

Additional Context: LLC resonant topologies and Zero Voltage Switching (ZVS)
This section details power electronics dynamics and switching topologies not included in the original press release.

In high-frequency power conversion, traditional "hard-switched" full-bridge topologies often suffer from significant switching losses and electromagnetic interference (EMI) because the internal MOSFETs are turned on and off while voltage and current are still present across the junction. The RVP007's support for LLC (inductor-inductor-capacitor) resonant topologies addresses this by enabling Zero Voltage Switching (ZVS). In an LLC circuit, the resonant tank shapes the electrical waveforms into sinusoids. The controller then precisely times the switching action to occur exactly when the voltage across the MOSFET naturally drops to zero. This technique virtually eliminates switching losses, minimizes thermal dissipation, and drastically reduces high-frequency EMI spikes. This electrical stability is particularly critical when powering isolated gate drivers for wide-bandgap semiconductors like Silicon Carbide (SiC), where the driver requires highly stable, noise-free power to prevent dangerous parasitic turn-on events during extremely rapid switching transients (high dV/dt).

Edited by an industrial journalist, Lekshman Ramdas, with AI assistance.

www.recom-power.com